With the increasing literacy rate, the crowd over internet is increasing dramatically and so as the internet threats. Now these days, even kids below 10 are aware of what a virus is and how easily a virus can be created. This is a major problem for the data and stock companies who keep their entire data online or at any server which is traceable. This paper deals with some of the most malicious attacks of cyber world and they takes a little effort to be applied from the attacker side but a lot of effort to even detect it. This paper also focuses on some of the modern world prevention architectures like usage of Artificial Intelligence (Neural Networks) and Swarm Intelligence (Artificial Bee Colony [ABC]). This paper has evaluated the effectiveness of the prevention algorithm through Quality of Service parameters

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WSN is built of various nodes -from a few to several hundreds or even thousands, where each node is connected to one or several sensors that is why the nodes are called the sensor nodes. These sensor nodes collect the physical or environment related data and sends to the sink node. All of these sensor nodes have limited energy power, so energy efficiency is the main factor that we have to consider while designing a wireless sensor routing protocol. Study shows that LEACH routing protocol and its different variants are energy efficient. Q-LEACH is a descendent of LEACH protocol which improve the lifetime of wireless sensor network by dividing the whole network in four equal quadrants. In this paper proposed extended Q-LEACH protocol using intermediate gateway nodes is discussed. General Terms Q-LEACH protocol with intermediate gateway nodes to improve lifetime of WSN KeywordsWireless sensor network, energy efficiency, LEACH, Q-LEACH, gateway nodes.

This paper presents a survey on various aspects of Wireless Body Area Network (WBAN) and its utility in healthcare system. Along with applications of WBAN in healthcare different areas of research with other prospective opportunities and prominent challenges are also discussed. Development in the field of wireless communication, particularly in the field of Personal Area Network and mobile networks, has lead to development of mobile healthcare system. As WBAN essentially consist of body sensors to sense various physical properties related to health. Apart from applications of WBAN, communication in WBAN and other important aspects like security, scalability are discussed. Some of the other important issues are physical and MAC layer design and network protocols being analysed.